Thank you to all of you who participated in the open beta release we appreciate all your help very much!
Moving forward we have now decided to roll out the Editor running on Engine v2 as the default. This will be released later today.
Should any further issues arise we will still be allowing access to the deprecated Editor running Engine v1 through adding the v1
query parameter to the end of your url e.g. https://playcanvas.com/editor/scene/2148249?v1
Documentation
Compatibility: Engine Compatibility | PlayCanvas Developer Site
Migrating between Engine V1 and V2: Editor Migrations | PlayCanvas Developer Site
Engine Migrations: Engine Migrations | PlayCanvas Developer Site
Engine changes
Root Ticket